WO2002016167A1 - Procede et dispositif de commande automatique de systemes d'eclairage - Google Patents

Procede et dispositif de commande automatique de systemes d'eclairage Download PDF

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Publication number
WO2002016167A1
WO2002016167A1 PCT/DE2001/002142 DE0102142W WO0216167A1 WO 2002016167 A1 WO2002016167 A1 WO 2002016167A1 DE 0102142 W DE0102142 W DE 0102142W WO 0216167 A1 WO0216167 A1 WO 0216167A1
Authority
WO
WIPO (PCT)
Prior art keywords
control device
calibration
light
lighting devices
calibrated
Prior art date
Application number
PCT/DE2001/002142
Other languages
German (de)
English (en)
Inventor
Wolfgang Herrmann
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to US10/111,471 priority Critical patent/US6800959B2/en
Priority to JP2002521061A priority patent/JP2004506569A/ja
Priority to EP01949244A priority patent/EP1235699A1/fr
Publication of WO2002016167A1 publication Critical patent/WO2002016167A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/312—Adverse weather
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/314—Ambient light

Definitions

  • the invention relates to a method and a device for the automatic control of lighting devices, in particular a motor vehicle according to the type of the independent claims.
  • Such methods are already known - for example from DE 195 23 262 - but they only show how the
  • Outdoor lighting devices are controllable due to an absolutely incident amount of light. However, various aging effects result in an undesirable change in the control characteristic.
  • the method according to the invention with the features of the main claim has the advantage that the control device, which acts on the lighting devices, is calibrated at time intervals, as a result of which aging effects of the optical media located in the detection area can be compensated. Another advantage arises when the control device, which acts on the lighting devices, is calibrated at time intervals, as a result of which aging effects of the optical media located in the detection area can be compensated. Another advantage arises when the control device, which acts on the lighting devices, is calibrated at time intervals, as a result of which aging effects of the optical media located in the detection area can be compensated. Another advantage arises when the control device, which acts on the lighting devices, is calibrated at time intervals, as a result of which aging effects of the optical media located in the detection area can be compensated. Another advantage arises when the control device, which acts on the lighting devices, is calibrated at time intervals, as a result of which aging effects of the optical media located in the detection area can be compensated. Another advantage arises when the
  • Calibration parameters are communicated to the control device by a rain sensor, which is also calibrated at time intervals.
  • the rain sensor and control device for controlling lighting devices are often arranged in a single housing and have similar or even the same optical media. As a result, the aging process of the two optical media is similar or even identical.
  • the rain sensor has a transmitter, a receiver and a light guide body, the receiver receives the light guided by the transmitter through the light guide body and compares this signal with a desired value.
  • the transmission properties can be easily determined, as a result of which the control device can be easily calibrated.
  • a higher accuracy can be achieved if a transmittance is determined as a result from the comparison of the received light signal with the target value and the control device is calibrated using this transmittance, since this is largely responsible for the shifting of the switching threshold of the control device.
  • control device has a second light guide body which is correlated with the optical properties of the first light guide body, this correlation can be taken into account when calibrating the control device.
  • the light guide body of the control device may be different from the light guide body of the rain sensor device, in particular also consist of different types of plastics or glasses.
  • the control device can still be precisely calibrated by correlating the optical properties.
  • any desired correlation of the optical properties of the two light-guiding bodies, provided that it can be functionally represented, can advantageously be taken into account in the calibration.
  • the calibration is carried out using a correlation stored as a table in the control device, the memory and computing capacity of the control device are minimized.
  • the calibration can then be carried out in a very simple manner, without having to lose flexibility in the correlation.
  • a very simple calibration can also advantageously be carried out in that it is carried out only as a function of time.
  • a rough approximation of the change in transmission can be carried out in this way, as a result of which no further measuring sections are required.
  • a further advantageous calibration option is provided if the calibration depends on the brightnesses measured in the past of the control device. Lots Plastics change their optical properties depending on the time and the intensity of the light to which they are exposed. If these quantities are measured, the optical properties of the plastic can be deduced from empirical values.
  • the device according to the invention with the features of claim 10 has the advantage that the control device is calibrated at time intervals. As a result, aging effects of the optical media or the receiver located in the detection area can be compensated for. It is particularly advantageous if the calibration parameters of a rain sensor can be used to calibrate the control device.
  • the rain sensor has a transmitter, a receiver and a light guide body and the receiver receives the light guided by the transmitter through the light guide body in order to emit transmission-dependent signals in this way.
  • Transmission properties are determined in this way, whereby the control device can be calibrated. If the control device also has a second light-guiding body, the optical properties of which are correlated with the light-guiding body of the rain sensor, this advantageously results in a simple, yet accurate calibration of the device.
  • the correlation is also advantageously stored as a tabular relationship in the control device in order to be able to carry out a quick calibration with as little computing effort as possible.
  • the two light guides of the rain sensor and the control device are formed in one piece, there is a similar change in the optical properties since both are exposed to the same solar radiation. This is advantageous because the transmission properties of plastics are significantly influenced by the ultraviolet radiation to which they are exposed when exposed to the sun.
  • the electronics of the control device and the electronics of the rain sensor can be arranged in one piece on a single circuit board in order to save costs and resources.
  • control device can be calibrated at time intervals by means of a calibration parameter which is dependent on the service life of the control device.
  • Aging effects of the optical media or aging effects of the receiver elements, which are typically designed as semiconductor components, are to a large extent time-dependent, which means that calibration over the service life is a good first approximation.
  • the calibration can be calibrated, for example, with a calibration parameter which is based on the sum of the intensities previously observed or measured on the control device.
  • Figure 1 shows an inventive device in a schematic
  • FIG. 2 shows a variation of the device according to the invention
  • Figure 4 shows a further variation of an inventive
  • FIG. 1 shows a device according to the invention for automatically controlling lighting devices 24. This has a rain sensor 10 which can be calibrated by means of a calibration stage 12.
  • the rain sensor 10 works according to an optical total reflection method.
  • a transmitter 14 sends light through a first light guide body 16 to a window 18, typically the windshield of a motor vehicle.
  • the light penetrates the pane 18 and is totally reflected on the outside of the pane 18 facing away from the first light-guiding body 16, on the glass-air interface, provided that it is not wetted by precipitation. That reflected Light from the pane 18 in turn passes through the first light guide body 16 to a receiver 20.
  • This receiver 20 then emits signals S dependent on the received light to the calibration stage 12.
  • the calibration stage 12 carries out a calibration in the knowledge of the light emitted by the transmitter 14.
  • the control device 22 serves to control lighting devices 24.
  • the ambient light passes through the pane 18 and through the second light-guiding body 26 to a further receiver 28, which is connected to the electronics 30 of the control device 22, which evaluates its signals and, depending on which the lighting devices 24 controls.
  • so-called switching thresholds are stored in the electronics 22, each of which corresponds to a defined brightness. If the signal of the further receiver 28 exceeds or falls below one or more of these switching thresholds, the lighting devices 24 are activated, i.e. off or on or dimmed.
  • the first and second light guide bodies 16, 18 can of course also be formed in one piece.
  • the electronics 30 of the control device 22 can be arranged on the same board of the calibration stage 12, which can also perform further functions.
  • FIG. 2 shows a variation of a device according to the invention.
  • no rain sensor is used for the calibration, but a separate calibration path within the control device 22.
  • the light from the transmitter 14 becomes the receiver 20 through the light guide body 16, 26 transfer.
  • the electronics 30 With the knowledge of the transmitted and received light, the electronics 30 then carries out a calibration. This changes the switching thresholds stored in the electronics 30 or amplifies the signal emitted by the further receiver 28.
  • a first step 40 the rain sensor 10 is activated.
  • the transmitter 14 then emits light of predetermined intensity in the direction of the pane 18 with its transmitter 14 and ensures that the pane 18 is clean, i.e. is free of dirt and rain. This can happen, for example, in that the rain sensor controls the wiper motor M and thus carries out a reference wiping, if necessary, with washing liquid.
  • a calibration step 42 the light that was totally reflected on the pane 18 is detected by the receiver 20.
  • the latter then outputs a signal S to the calibration device 12 of the rain sensor 10, which then carries out a comparison with a target value, which can also be transmitter-dependent.
  • the signal S is primarily determined by the transparency of the pane 18 or of the first light-guiding body 16. Since the pane 18 in motor vehicles generally consists of laminated glass, the signal S primarily represents a measure of the transparency of the first light-guiding body 16. In this way, the rain sensor 10 is able to react to each activation or at different time intervals. which do not have to be constant or predetermined to calibrate.
  • the calibration parameters K obtained in this calibration step 42 are used in a third step 44 by the control device 22 in order to shift the switching thresholds, when the lighting devices 24 are driven below or above them. If, for example, the result determined in calibration step 42 results in a transmission of 95 percent of the desired value 100 percent, the switching thresholds can be lowered by approximately 5 percent in order to compensate for the effect of the second light guide 26. Since the first light guide body 16 and the second light guide body 26 can also consist of different materials, which can also show different aging behavior, the electronics 30 of the control device 22 can also correct the result. This correction is stored as a correlation in the electronics 30 and can consist of a simple factor or a complex function.
  • a fourth step 46 the device is activated so that the lighting devices 24 are activated when the switching thresholds of the control device 22 are exceeded or undershot.
  • the ambient light passes through the pane 18 and the second light-guiding body 26 to the receiver 28.
  • the latter transmits the further signals L obtained therefrom to the electronics 30, which controls the lighting device 24 as a function of the switching thresholds.
  • the calibration process of the control device 22 can be carried out, for example, each time the rain sensor 10 is activated. Since the optical properties of the light guide change only slowly, this is sufficient if there is sufficient rainfall. In principle, the intervals I and T are completely independent and therefore do not have to be constant or the same. Is the control device 22 is not constantly active, the rain sensor 10 can also store its last calibration parameter K and transmit it to the control device 22 when it is activated.
  • the embodiment shown in Figure 2 works on the same principle. However, since the light from the transmitter 14 does not have to be totally reflected on the outside of the pane 18, there is no reference wiping during activation.
  • the optical properties of the light guide body 26 can also be determined approximately only from the service life.
  • the electronics 30 receives a time or date signal and shifts the switching thresholds towards a higher sensitivity with increasing age.
  • the size of this shift can be determined, for example, from empirical values or model calculations.
  • the electronics 30 with a totalizer which sums up the amount of light that has fallen onto the light guide body 26 in the past of the control device.
  • plastics change their properties and thus their transmission properties as a result of solar radiation.
  • the light irradiation is measured continuously by the receiver 28 and in this way conclusions can be drawn about the transmission properties of the light guide.
  • the switching thresholds can then be changed and a calibration can be carried out.
  • a memory cell in combination with a capacitor can serve as a summing device, which is incremented when the integrating capacitor exceeds a de ned voltage level and the latter is then discharged. in the In the simplest case, only one capacitor can be used as the summing unit.
  • calibration of a control device for the automatic control of lighting devices 24 can also be achieved in that light of a defined intensity and frequency is irradiated through the windshield 18 and the light guide body 26 onto the further receiver 28 at certain intervals, the signal emitted by the further receiver 28 is used by the electronics 30 to shift the switching thresholds.
  • the electronics 30 must be switched to a programming mode, which can be achieved, for example, by a defined pulsed radiation into the receiver 28.
  • This defined radiation can be digital in nature and correspond to a type of code.
  • the entire programming of the control device 30 can therefore be carried out via the incidence of light in the further receiver 28, as a result of which no further switching, trimming or plug elements on the control device 30 are necessary. If the control device 30 has a plurality of receivers 28, it is of course also possible to use a wide variety of combinations of the lighting for programming.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour la commande automatique de systèmes d'éclairage (24) au moyen d'un dispositif de commande (22) agissant sur des systèmes d'éclairage (24). Ce dispositif de commande est étalonné à des intervalles de temps (T), différents paramètres d'étalonnage étant pris en compte.
PCT/DE2001/002142 2000-08-24 2001-06-07 Procede et dispositif de commande automatique de systemes d'eclairage WO2002016167A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/111,471 US6800959B2 (en) 2000-08-24 2001-06-07 Method and device for the automatic control of illumination devices
JP2002521061A JP2004506569A (ja) 2000-08-24 2001-06-07 照明装置の自動制御方法及び照明装置の自動制御装置
EP01949244A EP1235699A1 (fr) 2000-08-24 2001-06-07 Procede et dispositif de commande automatique de systemes d'eclairage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10041674.8 2000-08-24
DE10041674A DE10041674A1 (de) 2000-08-24 2000-08-24 Verfahren und Vorrichtung zur automatischen Steuerung von Beleuchtungseinrichtungen

Publications (1)

Publication Number Publication Date
WO2002016167A1 true WO2002016167A1 (fr) 2002-02-28

Family

ID=7653691

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/002142 WO2002016167A1 (fr) 2000-08-24 2001-06-07 Procede et dispositif de commande automatique de systemes d'eclairage

Country Status (5)

Country Link
US (1) US6800959B2 (fr)
EP (1) EP1235699A1 (fr)
JP (1) JP2004506569A (fr)
DE (1) DE10041674A1 (fr)
WO (1) WO2002016167A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4661847B2 (ja) * 2007-09-10 2011-03-30 株式会社デンソー 車両用ライト制御装置
JP4678536B2 (ja) * 2007-10-01 2011-04-27 株式会社デンソー 照度センサ
DE102007061725A1 (de) * 2007-12-20 2009-06-25 Robert Bosch Gmbh Verfahren zur Plausibilitätsprüfung wenigstens eines Lichtdetektors einer Fahrlichtassistenzvorrichtung eines Kraftfahrzeugs
CN113013825B (zh) * 2021-03-05 2022-11-08 吉林省中科电缆附件有限公司 一种节能环保型低压电缆分支箱

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916374A (en) * 1989-02-28 1990-04-10 Donnelly Corporation Continuously adaptive moisture sensor system for wiper control
EP0537471A1 (fr) * 1991-10-18 1993-04-21 Mercedes-Benz Ag Procédé pour adapter la sensibilité de réaction d'un système détecteur de pluie à des conditions ambiantes et système détecteur avec un détecteur de pluie
JPH06328998A (ja) * 1993-05-21 1994-11-29 Honda Motor Co Ltd ワイパ自動制御装置
US5436541A (en) * 1991-04-19 1995-07-25 Mangler; Juergen Rain detector
DE19523262A1 (de) 1995-06-27 1997-01-02 Bosch Gmbh Robert Einrichtung zur automatischen Schaltung von Beleuchtungseinrichtungen bei Fahrzeugen
WO2001005626A1 (fr) * 1999-07-17 2001-01-25 Robert Bosch Gmbh Unite de detection photosensible, notamment pour la commutation automatique de dispositifs d'eclairage

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JPS5889430A (ja) * 1981-11-25 1983-05-27 Nippon Denso Co Ltd ワイパ及び照明制御装置
JPS6333645A (ja) * 1986-07-28 1988-02-13 Sharp Corp 光学式液体検出装置
US4956591A (en) * 1989-02-28 1990-09-11 Donnelly Corporation Control for a moisture sensor
US6084519A (en) * 1993-05-07 2000-07-04 Control Devices, Inc. Multi-function light sensor for vehicle
JP3493909B2 (ja) * 1996-07-17 2004-02-03 オムロン株式会社 自動点消灯システム及びその閾値設定方法
US6681163B2 (en) * 2001-10-04 2004-01-20 Gentex Corporation Moisture sensor and windshield fog detector
US5923027A (en) * 1997-09-16 1999-07-13 Gentex Corporation Moisture sensor and windshield fog detector using an image sensor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916374A (en) * 1989-02-28 1990-04-10 Donnelly Corporation Continuously adaptive moisture sensor system for wiper control
US5436541A (en) * 1991-04-19 1995-07-25 Mangler; Juergen Rain detector
EP0682611A1 (fr) * 1991-04-19 1995-11-22 Bosch Gmbh Robert Dispositif pour l'utilisation d'un detecteur de pluie.
EP0537471A1 (fr) * 1991-10-18 1993-04-21 Mercedes-Benz Ag Procédé pour adapter la sensibilité de réaction d'un système détecteur de pluie à des conditions ambiantes et système détecteur avec un détecteur de pluie
JPH06328998A (ja) * 1993-05-21 1994-11-29 Honda Motor Co Ltd ワイパ自動制御装置
DE19523262A1 (de) 1995-06-27 1997-01-02 Bosch Gmbh Robert Einrichtung zur automatischen Schaltung von Beleuchtungseinrichtungen bei Fahrzeugen
WO2001005626A1 (fr) * 1999-07-17 2001-01-25 Robert Bosch Gmbh Unite de detection photosensible, notamment pour la commutation automatique de dispositifs d'eclairage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 02 31 March 1995 (1995-03-31) *

Also Published As

Publication number Publication date
US20030048001A1 (en) 2003-03-13
US6800959B2 (en) 2004-10-05
EP1235699A1 (fr) 2002-09-04
DE10041674A1 (de) 2002-03-07
JP2004506569A (ja) 2004-03-04

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